Self-threading shuttle



W. B. BROWN.

SELF THREADING SHUTTLE.

I APPucATloN man rsa. 25, 1920.

W. B. BROWN.

, SELF THREADING SHUTTLE.

- APPLICATION FILED FEB. 25,1920.

2 SHEETS-SHEET 2.

1,356,513. Patented oef, 26,1920;

UNITED STATESWPA TENT or FICE.

WILLIAM B. IBROVVN, OF GREENVILLE, SOUTH CAROLINA. 1

. SELF-THREADING SHUTTLE.

To @Zlio/wm t may concern.'

Be it known that IWILLIAM B. BROWN, a citizen of the United States, residing at Greenville, in the Acounty oit-Greenville and State of South Carolina, have invented certain new and useful Improvements in Self- Threading Shuttles; and I do herebygde- Aclare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use' the same.

The object of the invention is to provide a simple and effective ,self threading loom shuttle wherein the guiding of the yarn after the shuttle has been threaded may be effected without undue friction or chaiing or the liability of displacement or disarrangement due to the ballooning of the yarn, and whereby 'the desired and necessary tension upon the yarn to prevent looseness or slack dueto the run of the shuttle may be accurately adjusted Without loss of time or the necessityfor expert assistance other than that possessed by the ordinary loom operator, and withy these objects in view the invention consists in a construction and combination of parts of which. a preferred embodiment is shown in the accompanying drawings, wherein:

Figure' 1 isa plan view of the shuttle provided with *self threading means con-l` structed in accordance with the invention.

Fig. 2 is a side View of the same.

vFig. 3 is a longitudinal section in the plane of the threading slot.

Figs. 4 and 5 are side views taken respectively from opposite sides of the block detached from the shuttle body.

Figs. 6 and 7 are end views taken respectively to show opposite ends of the block'.

Fig. 8 is a transverse section taken on the plane indicated by the line 8 8 of Fig. 1, in the pla-ne of the tension screw.

The threading device indicated generally at 10 is arranged in the forward end of the shuttle body l1 having the usual bobbin chamber 12 in which is arranged the bobbin 13, said self threading device consisting of a single block which is seated in a suitable cavity at the forward end of the bobbin chamber and is held in place by a Atransverse screw 14 located in rear of the delivery eye 15 of the shuttle body and coun- Vtersunk below the bottom of the thread groove 16. The block is provided with the longitudi- Speciication of Letters Patent;

- Patenteafoet; 26,1920.' Application filed February 25, 1920.V Seriali-No.r 361,199. y

nal thread guide larrangedsubstantially in alinementvwith the axis ofthel bobbin and accessible through a threading Aslot 18 formed longitudinally in theA top of the blockand opening into 19 which is almost closed at a transverse deector ribv20 rect the yarn into the guide and overhangingthe latter to minimize the possibility of the yarn leaving saidguide'afterit has become seated therein.

One side of the block at its `outer surface is extended `to form a beak 21 which extends under an overhanging ear 22 between which the yarn must pass inthe threading operation, `and `depending fromr `said beak is the horn 23 terminating ina rearwardly directed toe 24C bounding the front side-,of the eye 25 which registers with thedeliv'ery eyek of the shuttle body and` is yspannedy by the snubbing pin 26 which extendsterminal'ly below the toe of the horn, so that as the yarn is drawn downwardafter passing the beak. over the horn, rit comes in contact with thev snubbing pin vand is .directed into theleye of the vblock through which it is fed to the 4delivery eye of the shuttle. Guide or snubbing pins 27 and 28 may also be arranged at the front and rear sides of the delivery eye of the shuttle body, to relieve friction upon the yarn in passing therebetween in the forward and `rearward runs of the shuttle.

Also at its inner or rear `end (adjacent to the bobbin chamber) the block is provided with pliable fingers 30 lfor holding a friction pad 31 in position for traverse by the yarn in passing from the bobbin to the guide in the block. p

Extended upward from lthe lower side of the block, in .the bodyiportion kthereof and intersecting the yarn guide is a 'tension screw 32 having' a longitudinal kerf 33 registering with the yarn guide and accessible through a lateral passage 34 which is overhang by a beveled defiector tip y35 correspon ding substantially in section with the deflector rib which spans the space' between the threading passage of the block and the yarn guide, to the end that as the yarn is drawn through the threading channel and downward t0- ward theyarn guide, it is alsodelected into its bottom by the lateral passage formed in the tension screw to lie ultimately inthe kerf in the tension screw, so that by turning the .latter more or less the yarn guide may be choked a longitudinal bore serving to dif lnore or less to apply the desired frictional resistance or tension to the yarn to-regulate the feeding thereof through the guide.

What is claimed is 1. A self threading shuttle having a yarn guide and a communicating threading channel intercepted by a laterally extending beak and an overlapping ear, a horn depending from the beak and having a' rearwardly directed forwardly convexed toe bounding an eye in registration with the delivery eye of the shuttle body and spanned by a' snubbing pin extending beyond the extremity of said toe for engagement with and deflectionof a strand of yarn traversing the surface of the toe. 1

2. A self threading shuttle having a threading block provided with a longitudinal yarn guide and a communicating threadlng channel and related nie-ans for directing the yarn to the delivery eye7 and a tensioning device consisting of a revoluble member provided with a longitudinal lrerf in communication with said yarn guide.

A self threading shuttle having a thread block provided with a yarn guide and a threading channel inconinninication there with and means for directing the yarn from said channel to the delivery eye, and a tenion screw spanning the yarn guide and provided with a kerf in registration therewith and" revoluble to vary the positionv of the kerf relative to the run of the yarn.

4;. A self threading shuttle having a` threading block provided with a yarn guide and a communicating threading channel and means for directing the yarn to the delivery eye, a deiector rib being disposed between the threading channel and the Vyarn guide, a tension screw disposed in and having a laterally accessible lrerf in Vregistration with the yarn guide, and a delector tip disposed in registering relation with said deflector rib and overhanging said tension screw..

5. A self threading shuttle having its body provided with a delivery eye, a threading block having a longitudinal thread guide and afriction pad located at the entrance to said yarn guide, a threading channelA ei:- tending longitudinally of the block and spanned at its forward end by a transversely projecting beal' andan overlying guard ear, said threading channel being separated from the yarn guide by an overhanging de'lector rib, a horn depending from the bealr and having a rearwardly directed toe bounding the forward side of an eye in communication with the yarn guide, and a snubbing pin arranged in spanning relation with the said' eye and spaced from the extremity of the toe and projecting terminally beyond the latter for intercepting the yarn in itsl passage around the horn to direct the same into the eye, in combination with means for transversely restricting the yarn guide at an intermediate portion of its length.

In testimony whereof affix my signature in presence of two witnesses.

VILLIAM B'. BROT Wlitnesses:

V. D. RAMsDnN, W. L. GAssAWAY. 

